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authorJacob McDonnell <jacob@jacobmcdonnell.com>2025-03-01 17:02:08 -0500
committerJacob McDonnell <jacob@jacobmcdonnell.com>2025-03-01 17:02:08 -0500
commite4373e0997375ee6b0446d4362ede229f6b95c1c (patch)
treebb79c9e2b74125766e9bbf8c32b6d3fada1e607d
parent58fbe5dfa0b0b3dab5262b36807b91605d9f961a (diff)
HW7 Almost Done
-rw-r--r--cmpen472hw6_McDonnell/Full_Chip_Simulation.ini2
-rw-r--r--cmpen472hw6_McDonnell/Sources/cmpen472hw6_McDonnell.asm730
-rw-r--r--cmpen472hw6_McDonnell/Sources/main.asm4
-rw-r--r--cmpen472hw6_McDonnell/bin/Project.absbin7350 -> 7350 bytes
-rw-r--r--cmpen472hw6_McDonnell/bin/main.dbg4
-rw-r--r--cmpen472hw6_McDonnell/cmpen472hw6_McDonnell.mcpbin57065 -> 57065 bytes
-rw-r--r--cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/CWSettingsWindows.stgbin2088 -> 4263 bytes
-rw-r--r--cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/ObjectCode/main.asm.obin7350 -> 7350 bytes
-rw-r--r--cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/TargetDataWindows.tdtbin64868 -> 64868 bytes
-rw-r--r--cmpen472hw7_McDonnell/ASM_layout.hwl21
-rw-r--r--cmpen472hw7_McDonnell/Default.membin0 -> 285 bytes
-rw-r--r--cmpen472hw7_McDonnell/Full_Chip_Simulation.hwc1
-rw-r--r--cmpen472hw7_McDonnell/Full_Chip_Simulation.ini42
-rw-r--r--cmpen472hw7_McDonnell/Sources/derivative.inc10
-rw-r--r--cmpen472hw7_McDonnell/Sources/main.asm611
-rw-r--r--cmpen472hw7_McDonnell/bin/Project.absbin0 -> 7306 bytes
-rw-r--r--cmpen472hw7_McDonnell/bin/Project.abs.phy2
-rw-r--r--cmpen472hw7_McDonnell/bin/Project.abs.s1947
-rw-r--r--cmpen472hw7_McDonnell/bin/main.dbg609
-rw-r--r--cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Postload.cmd1
-rw-r--r--cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Preload.cmd1
-rw-r--r--cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Reset.cmd1
-rw-r--r--cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_SetCPU.cmd1
-rw-r--r--cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Startup.cmd1
-rw-r--r--cmpen472hw7_McDonnell/cmpen472hw7_McDonnell.mcpbin0 -> 57065 bytes
-rw-r--r--cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/CWSettingsWindows.stgbin0 -> 2088 bytes
-rw-r--r--cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.obin0 -> 7306 bytes
-rw-r--r--cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.sx47
-rw-r--r--cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/TargetDataWindows.tdtbin0 -> 64449 bytes
-rw-r--r--cmpen472hw7_McDonnell/prm/burner.bbl157
30 files changed, 2287 insertions, 5 deletions
diff --git a/cmpen472hw6_McDonnell/Full_Chip_Simulation.ini b/cmpen472hw6_McDonnell/Full_Chip_Simulation.ini
index a59351c..6541589 100644
--- a/cmpen472hw6_McDonnell/Full_Chip_Simulation.ini
+++ b/cmpen472hw6_McDonnell/Full_Chip_Simulation.ini
@@ -10,7 +10,7 @@ Target=sim
Layout=ASM_layout.hwl
LoadDialogOptions=AUTOERASEANDFLASH NORUNAFTERLOAD
CPU=HC12
-MainFrame=0,1,-1,-1,-1,-1,457,164,2377,1187
+MainFrame=0,1,-1,-1,-1,-1,268,153,2188,1176
Configuration=Full_Chip_Simulation.hwc
Statusbar=1
ShowToolbar=1
diff --git a/cmpen472hw6_McDonnell/Sources/cmpen472hw6_McDonnell.asm b/cmpen472hw6_McDonnell/Sources/cmpen472hw6_McDonnell.asm
new file mode 100644
index 0000000..5287ff0
--- /dev/null
+++ b/cmpen472hw6_McDonnell/Sources/cmpen472hw6_McDonnell.asm
@@ -0,0 +1,730 @@
+**************************************************************************
+*
+* Title: Memory Monitor
+*
+* Objective: CMPEN 472 Homework 6
+*
+* Revision: V1.0
+*
+* Date: Feb. 28, 2025
+*
+* Programmer: Jacob McDonnell
+*
+* Company: The Pennsylvania State University
+* Department of Computer Science and Engineering
+*
+* Algorithm: Simple Serial I/O, address poking and modifying
+*
+* Register Use: A & B to current byte, etc,
+* X & Y holds address of strings and length of string,
+* D to hold data and address of the memory location to work on.
+*
+* Memory Use: RAM Locations from $3000 for data,
+* RAM Locations from $3100 for program
+*
+* Input: Serial Port for User Input
+*
+* Output: Serial Port for String Output
+* Memory locations changed if modified by user
+*
+* Observation: This program will prompt the user to print the contents of a
+* memory location and to modify the location with hexadecimal or
+* decimal data. If the user wishes, they can type 'QUIT' to exit
+* the memory monitor and enter the type writer program.
+*
+* Note: ON CSM-12C128 board,
+*
+* Comments: This program is developed and simulated using CodeWarrior
+* development software and targeted for Axion
+* Manufacturing's CSM-12C128 board running at 24MHz.
+*
+**************************************************************************
+* Parameter Declearation Section
+*
+* Export Symbols
+ xdef pgstart ; export 'pgstart' symbol
+ absentry pgstart ; for assembly entry point
+
+* Symbols and Macros
+PORTA equ $0000 ; i/o port A addresses
+DDRA equ $0002 ; data direction register for PORTA
+PORTB equ $0001 ; i/o port B addresses
+DDRB equ $0003 ; data direction register for PORTB
+
+SCIBDH equ $00C8 ; Serial port (SCI) Baud Register H
+SCIBDL equ $00C9 ; Serial port (SCI) Baud Register L
+SCICR2 equ $00CB ; Serial port (SCI) Control Register 2
+SCISR1 equ $00CC ; Serial port (SCI) Status Register 1
+SCIDRL equ $00CF ; Serial port (SCI) Data Register
+
+CR equ $0d ; carriage return, ASCII 'Return' key
+LF equ $0a ; line feed, ASCII 'next line' character
+NULL equ $00 ; NULL Terminator character
+
+**************************************************************************
+* Data Section: address used [ $3000 to $30FF ] RAM Memory
+*
+ org $3000 ; Reserved RAM memory starting address
+ ; for Data for CMPEN 472 class
+TESTER dc.w $0005 ; Memory location to test showing data
+ ; and writing data.
+
+buffer ds.b $0010 ; Array of 16 bytes to read a string
+ dc.b NULL ; NULL terminated
+lenBuf dc.w $0010 ; Length of buffer array
+
+buffer2 ds.b $0010 ; Array of 16 bytes for reading and reversal
+ dc.b NULL ; NULL terminated
+lenBuf2 dc.w $0010 ; length of buffer2
+
+*
+* There is a section Data Section at the end of the file
+**************************************************************************
+* Program Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+ org $3100 ; Program start address, in RAM
+pgstart lds #$3100 ; initialize the stack pointer
+
+ ldaa #%11110001 ; LED 1,2,3,4 at PORTB bit 4,5,6,7
+ staa DDRB ; set PORTB bit 4,5,6,7 as output
+
+ ldaa #$0C ; Enable SCI port Tx and Rx units
+ staa SCICR2 ; disable SCI interrupts
+
+ ldd #$0001 ; Set SCI Baud Register = $0001 => 1.5M baud at 24MHz (for simulation)
+ std SCIBDH ; SCI port baud rate change
+
+ ldx #msg ; Load the address of the welcome message into X
+ jsr WriteString ; Write the string to the serial console
+
+mainLoop
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr Zeros ; Fill the buffer with zeros
+
+ ldaa #'>' ; Load '>' into A
+ jsr putchar ; Jump to putchar to write to console
+ ldaa #' ' ; Load space character into A
+ jsr putchar ; Jump to putchar to write to console
+
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr ReadString ; Read a line from the serial console
+
+ ldx #buffer ; Load the address of the buffer into X
+ jsr CheckInput ; Jump to CheckInput to parse the user input
+ bra mainLoop ; Loop back to mainLoop always
+TypeWriter ldx #twMsg ; Load Type Writer welcome message address
+ jsr WriteString ; Jump to WriteString to write message to serial
+twReadLoop jsr getchar ; Read Character from Serial
+ beq twReadLoop ; While Character == 0, branch to twReadLoop
+ jsr putchar ; Write Character back to terminal
+ staa PORTB ; Write Character to PORTB
+ bra twReadLoop ; Branch always to twReadLoop
+
+**************************************************************************
+* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+;*************************************************************************
+; CheckInput subroutine
+;
+; This subroutine will check the input string and match the option.
+;
+; Input: Address of null terminated string in X.
+; Output: No Output, Control flow changed to proper subroutine.
+; Registers in use: X for the address of the string, A & B to read characters from
+; from the string.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine will not return a value, it will jump to the proper subroutine
+; based on the input given. If "QUIT" is the command, this subroutine will jump
+; to TypeWriter which will not return and needs to be restarted to exit.
+;
+
+CheckInput
+ pshx ; Save X to the stack
+ pshd ; Save D to the stack
+ ldaa 1,x+ ; Read Character from the string in X
+ cmpa #'W' ; Compare Character to 'W'
+ beq cWrite ; If A == 'W', branch to cWrite
+ cmpa #'Q' ; Compare A to 'Q'
+ beq cTypeWrite ; If A == 'Q', branch to cTypeWrite
+ cmpa #'S' ; Compare A to 'S'
+ bne cUnknownCMD ; If A != 'S', Command unknown
+ ldaa 0,x ; Load next character but don't increment
+ cmpa #'$' ; Compare A to '$'
+ bne cUnknownCMD ; If A != '$', branch to unknown command
+ jsr ReadHex ; ReadHex to Read the memory Address
+ beq cBadAddr ; If Z == 1, branch to cBadAddr
+ exg Y,X ; Exchange Y for X
+ pshx ; Save X to the stack
+ ldx #buffer ; Load address of buffer into X
+ ldy lenBuf ; Loadd length of the buffer into Y
+ jsr Zeros ; Fill buffer with Zeros
+ pulx ; Restore X from the stack
+ bra cDone ; branch always to cDone
+cWrite ldaa 0,x ; Load next character but don't increment
+ cmpa #'$' ; Compare A to '$'
+ bne cUnknownCMD ; If A != '$', branch to unknown command
+ jsr ReadHex ; ReadHex to Read the memory Address
+ beq cBadAddr ; If Z == 1, branch to cBadAddr
+ exg Y,D ; Exchange Y and D
+ pshd ; Save D to the stack
+skipSpaces ldaa 1,x+ ; Load next character into A
+ beq cBadData ; If A == 0, branch to bad Data (no data given)
+ cmpa #' ' ; Compare A to space character
+ beq skipSpaces ; While A == ' ', loop to skip spaces
+ cmpa #'$' ; Compare A to '$'
+ beq cHexData ; If A == '$', branch to cHexData
+ dex ; Decrement X by 1
+ jsr ReadDecimal ; Jump to ReadDecimal
+ beq cBadData ; If Z == 1, branch to cBadData
+ bra cWriteData ; Branch always to cWriteData
+cHexData dex ; Decrement X by 1
+ jsr ReadHex ; Jump to ReadHex to read hex data
+ beq cBadData ; If Z == 1, branch to cBadData
+cWriteData puld ; Restore D from the stack
+ exg D,X ; Exchange D and X
+ sty x ; Write data in Y to memory in X
+cDone jsr PrintMem ; Jump to PrintMem to print the contents of the location
+ puld ; Restore D from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+cBadAddr ldx #badAddr ; Load the address of badAddr into X
+ jsr WriteString ; Write badAddr to serial console
+ puld ; Restore D from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+cBadData ldx #badData ; Load the address of badData into X
+ jsr WriteString ; Write badData to serial console
+ puld ; Restore D from the stack
+ puld ; Restore D from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+cUnknownCMD ldx #badCom ; Load the address of badCom into X
+ jsr WriteString ; Write badCom to the serial console
+ puld ; Restore D from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+cTypeWrite ldaa 1,x+ ; Load next character from X
+ cmpa #'U' ; Compare A to 'U'
+ bne cUnknownCMD ; If A != 'U', branch to unknown command
+ ldaa 1,x+ ; Load next character from X
+ cmpa #'I' ; Compare A to 'I'
+ bne cUnknownCMD ; If A != 'I', branch to unknown command
+ ldaa 1,x+ ; Load next character from X
+ cmpa #'T' ; Compare A to 'T'
+ bne cUnknownCMD ; If A != 'T', branch to unknown command
+ ldaa 1,x+ ; Load next character from X
+ bne cUnknownCMD ; If A != 0, branch to unknown command
+ jmp TypeWriter ; Jump to TypeWriter
+
+;*************************************************************************
+; ReadHex subroutine
+;
+; This subroutine will read an ASCII string of a number in hex and convert it to
+; its value.
+;
+; Input: A memory address in register X.
+; Output: The value of the hex number in the Y register, and any errors printed
+; to the serial line. Zero bit is set if error occurs.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine will return the value in the Y register, and if an error occurs,
+; the Zero bit in the CCR will be set.
+;
+
+ReadHex
+ pshd ; Save D to the stack
+ ldy #0 ; Clear Y register
+ ldab 1,x+ ; Read character from X into B, add 1 to X
+ cmpb #'$' ; Compare B to '$'
+ bne rHError ; If B != '$', jump to error, not hex data
+rHLoop ldab 1,x+ ; Read Next character from X
+ beq rHDone ; If B == 0, exit loop
+ cmpb #' ' ; Compare B to space character
+ beq rHDone ; If B == ' ', exit loop
+ cmpb #'0' ; Compare B to '0' character
+ blt rHError ; If B < '0', bad address, exit loop
+ cmpb #'9' ; Compare B to '9' character
+ bhi rHAlpha ; If B > '9', check if 'A'-'F' characters
+ subb #'0' ; Subtract '0' from B to get true value
+ pshb ; Save B to the stack
+ ldd #16 ; load 16 into D
+ emul ; Multiply Y and D
+ exg d,y ; Transfer data from D to Y
+ pulb ; Restore b from the stack
+ aby ; Add B to Y
+ bra rHLoop ; Branch always to rHLoop
+rHAlpha cmpb #'A' ; Compare B to 'A' character
+ blt rHError ; If B < 'A', bad address, exit loop
+ cmpb #'F' ; Compare B to 'F' character
+ bhi rHError ; If B > 'F', invalid data, error out
+ subb #'A' ; Subtract 'A' from B to get true value
+ addb #$A ; Add $A to B to account for offet
+ pshb ; Save B to the stack
+ ldd #16 ; load 16 into D
+ emul ; Multiply Y and D
+ exg d,y ; Transfer data from D to Y
+ pulb ; Restore b from the stack
+ aby ; Add B to Y
+ bra rHLoop ; Branch always to rHLoop
+rHDone clra ; clear A accumulator
+ tap ; Transfer A into CCR to clear zero bit
+ puld ; Restore D from the stack
+ rts ; Return to caller
+rHError ldaa #4 ; Load 4 into A to set zero bit in CCR
+ tap ; Transfer A into CCR to set zero bit and warn error
+ puld ; Restore D from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; ReadDecimal subroutine
+;
+; This subroutine will read an ASCII string of a number in decimal and convert it to
+; its value.
+;
+; Input: A memory address in register X.
+; Output: The value of the number in the Y register, and any errors printed
+; to the serial line. Zero bit is set if error occurs.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine will return the value in the Y register, and if an error occurs,
+; the Zero bit in the CCR will be set.
+;
+
+ReadDecimal
+ pshd ; Save D to the stack
+ ldy #0 ; Clear Y register
+dHLoop ldab 1,x+ ; Read Next character from X
+ beq dHDone ; If B == 0, exit loop
+ cmpb #' ' ; Compare B to space character
+ beq dHDone ; If B == ' ', exit loop
+ cmpb #'0' ; Compare B to '0' character
+ blt dHError ; If B < '0', bad address, exit loop
+ cmpb #'9' ; Compare B to '9' character
+ bhi dHError ; If B > '9', check if 'A'-'F' characters
+ subb #'0' ; Subtract '0' from B to get true value
+ pshb ; Save B to the stack
+ ldd #10 ; load 10 into D
+ emul ; Multiply Y and D
+ exg d,y ; Transfer data from D to Y
+ pulb ; Restore b from the stack
+ aby ; Add B to Y
+ bra dHLoop ; Branch always to rHLoop
+dHDone clra ; clear A accumulator
+ tap ; Transfer A into CCR to clear zero bit
+ puld ; Restore D from the stack
+ rts ; Return to caller
+dHError ldaa #4 ; Load 4 into A to set zero bit in CCR
+ tap ; Transfer A into CCR to set zero bit and warn error
+ puld ; Restore D from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintMem subroutine
+;
+; This subroutine will print the address and contents of the given memory location.
+;
+; Input: A memory address in register X.
+; Output: The memory address in Hex and the contents in binary, hex, & decimal
+; on the serial output.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for the contents of the location, Y for another buffer address while
+; reversing strings and printing.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires the serial console to be setup before calling.
+;
+
+PrintMem
+ pshy ; Save Y to the Stack
+ pshd ; Save D to the Stack
+ exg x,d ; Copy Address from X to D to print
+ ldy #buffer ; Load the address of buffer into Y
+ jsr PrintHexWord ; Print the Address in Hex
+ exg d,x ; Copy Address from D to X
+ ldaa #'=' ; Load the '=' character into A
+ jsr putchar ; Print the character to the serial
+ ldaa #'>' ; Load the '>' character into A
+ jsr putchar ; Print the character to the serial
+ ldd x ; Load data from address in X into D
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr Zeros ; Fill the buffer with Zeros
+ jsr PrintBinaryWord ; Print the binary word to the serial
+ psha ; Save A to the stack
+ ldaa #' ' ; Load Space character into A
+ jsr putchar ; Print Space character to the serial
+ jsr putchar ; Print Space character to the serial
+ pula ; Restore A from the stack
+ ldy #buffer ; Load the address of the buffer into Y
+ jsr PrintHexWord ; Prin the hex representation of the word to serial
+ psha ; Save A to the stack
+ ldaa #' ' ; Load Space character into A
+ jsr putchar ; Print Space character to the serial
+ jsr putchar ; Print Space character to the serial
+ pula ; Restore A from the stack
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr Zeros ; Fill the buffer with Zeros
+ ldy #buffer ; Load the address of the buffer into Y
+ jsr PrintDecimalWord; Prin the decimal representation of the word to serial
+ ldaa #CR ; Load the carriage return character into A
+ jsr putchar ; Print the character to serial
+ ldaa #LF ; Load the line feed character into A
+ jsr putchar ; Print the character to serial
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; strrev subroutine
+;
+; This subroutine will reverse a string from one buffer into another.
+;
+; Input: Address of null terminated string in X, address of a large enough
+; buffer in Y.
+; Output: The string in X reversed in Y.
+; Registers in use: X for the address of the string, Y for the address of the buffer,
+; A to read characters from the string.
+; Memory locations in use: Memory Address for serial line, address of the string & buffer
+;
+; Comments: This subroutine will not check that the output buffer is large enough, that
+; is the job of the caller.
+;
+
+strrev
+ pshx ; Save X to the stack
+ pshy ; Save Y to the stack
+ psha ; Save A to the stack
+revLoop ldaa 1,y- ; Load Character from Y into A, decrement Y
+ beq revDone ; If Character is 0, exit loop
+ staa 1,x+ ; Save character in address in X, increment X
+ bra revLoop ; Loop back always
+ clra ; Set A to Zero
+revDone staa 1,x+ ; Copy Null terminator into new string
+ pula ; Restore A from the stack
+ puly ; Restore Y from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintBinaryWord subroutine
+;
+; This subroutine will print a given word of data to the serial in binary.
+;
+; Input: 1 word of data in register D
+; Output: Binary representation of the data on the serial console
+; Registers in use: X to count the number of bits written, D for the input, A for characters,
+; B for the byte being written.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+PrintBinaryWord
+ pshx ; Save X to the stack
+ pshd ; Save D (A:B) to the stack
+ pshb ; Save B to the stack (we want these bits again later)
+ tab ; Transfer A to B to get upper byte
+ ldaa #'%' ; Load '%' into A
+ jsr putchar ; Print '%' to serial to denote binary number
+ ldx #16 ; Load 16 into X, since we're printing 16 bits
+bPrintLoop rolb ; Rotate MSB of B into C of CCR
+ tpa ; Copy CCR into A
+ anda #1 ; and A with 1 to get only LSB
+ adda #'0' ; Add '0' to A to get ASCII Character
+ jsr putchar ; Print Character A to serial
+ dbeq X,bPrintDone ; Decrement X and if X == 0, branch to done
+ cpx #8 ; Compare X to 8 to check if done with upper byte
+ bne bPrintLoop ; If X != 8, loop to bPrintLoop
+ pulb ; Restore B from stack to get lower byte
+ bra bPrintLoop ; Branch back into loop to print lower byte
+bPrintDone puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintHexWord subroutine
+;
+; This subroutine will print a given word of data to the serial in binary.
+;
+; Input: 1 word of data in register D, Buffer Address in Y
+; Output: Hexadecimal representation of the data on the serial console
+; Registers in use: Y for the address of the buffer, X to count the number of bits
+; written and for division, D for the input, A for characters.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+PrintHexWord
+ pshx ; Save X to the stack
+ pshd ; Save D (A:B) to the stack
+ pshy ; Save Y to the stack
+ cpd #0 ; Compare D to zero
+ beq hIsZero ; Branch to hIsZero
+ psha ; Save A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save x to the stack
+ ldaa #'0' ; Load the '0' character into A
+ ldx #buffer2 ; Load the address of buffer2 into X
+ ldy #5 ; Load 5 into Y
+ jsr memset ; Write '0' to the first 5 bytes in buffer2
+ pulx ; Restore X from the stack
+ puly ; Restore Y from the stack
+ clra ; Set A to zero
+ staa 0,y ; Load Zero into Y for Null Terminator
+ pula ; Restore A from the stack
+hPrintLoop ldx #16 ; Load 16 in X for division
+ idiv ; Divide D / 16 to get Hex Digit
+ cpx #0 ; Compare X to 0
+ beq hCheck ; If X == 0, branch to check D is zero
+hDNotZero cmpb #$0A ; Compare A to $0A
+ blt hex10 ; If B < $A, branch to hex10
+ addb #'A' ; Add 'A' to B to get ASCII Character
+ subb #$0A ; Subtract $A to adjust characters
+ stab 1,+y ; Save character from B to Y
+ exg X,D ; Swap values in X and D
+ bra hPrintLoop ; loop to hPrintLoop
+hex10 addb #'0' ; Add '0' to B to get ASCII Character
+ stab 1,+y ; Save character from B to Y
+ exg X,D ; Swap values in X and D
+ bra hPrintLoop ; Loop to hPrintLoop
+hCheck cpd #0 ; Compare D to 0
+ bne hDNotZero ; If D != 0, branch back to hDNotZero
+hPrintDone ldaa #'$' ; Load '$' into
+ staa 1,+y ; Save '$' into buffer in Y to denote Hex
+ ldx #buffer2 ; Load the address of buffer2 in X
+ jsr strrev ; Reverse string in Y in buffer in X
+ jsr WriteString ; Jump to write string to write the number
+ ldy lenBuf2 ; Load the length of buffer2 into Y
+ ldx #buffer2 ; Load the address of buffer2 into X
+ jsr Zeros ; Fill buffer2 with zeros
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+hIsZero ldaa #'$' ; Load '$' character into A
+ jsr putchar ; Print character to the screen
+ ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print character to the screen
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintDecimalWord subroutine
+;
+; This subroutine will print a given word of data to the serial in binary.
+;
+; Input: 1 word of data in register D, Buffer Address in Y
+; Output: Decimal representation of the data on the serial console
+; Registers in use: Y for the address of the buffer, X to count the number of bits
+; written and for division, D for the input, A for characters.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+PrintDecimalWord
+ pshx ; Save X to the stack
+ pshd ; Save D (A:B) to the stack
+ pshy ; Save Y to the stack
+ cpd #0 ; Compare D to zero
+ beq dIsZero ; Branch to hIsZero
+ psha ; Save A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save x to the stack
+ ldaa #'0' ; Load the '0' character into A
+ ldx #buffer2 ; Load the address of buffer2 into X
+ ldy #5 ; Load 5 into Y
+ jsr memset ; Write '0' to the first 5 bytes in buffer2
+ pulx ; Restore X from the stack
+ puly ; Restore Y from the stack
+ clra ; Set A to zero
+ staa 0,y ; Load Zero into Y for Null Terminator
+ pula ; Restore A from the stack
+dPrintLoop ldx #10 ; Load 10 in X for division
+ idiv ; Divide D / 10 to get Hex Digit
+ cpx #0 ; Compare X to 0
+ beq dCheck ; If X == 0, branch to check D is zero
+dDNotZero addb #'0' ; Add '0' to B to get ASCII Character
+ stab 1,+y ; Save character from B to Y
+ exg X,D ; Swap values in X and D
+ bra dPrintLoop ; Loop to hPrintLoop
+dCheck cpd #0 ; Compare D to 0
+ bne dDNotZero ; If D != 0, branch back to hDNotZero
+dPrintDone ldx #buffer2 ; Load the address of buffer2 in X
+ jsr strrev ; Reverse string in Y in buffer in X
+ jsr WriteString ; Jump to write string to write the number
+ ldy lenBuf2 ; Load the length of buffer2 into Y
+ ldx #buffer2 ; Load the address of buffer2 into X
+ jsr Zeros ; Fill buffer2 with zeros
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+dIsZero ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print character to the screen
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; Zeros subroutine
+;
+; This subroutine will write zeros to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y
+; Output: Zeros in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for 0
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+Zeros
+ psha ; Save A to the Stack
+ clra ; Clear A
+zerosLoop staa 1,x+ ; Load A into byte at X
+ dbne y,zerosLoop ; Decrement Y and loop if Y != 0
+ pula ; Restore A from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; memset subroutine
+;
+; This subroutine will write a given byte to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y, the byte in A
+; Output: The given byte in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for the given byte
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+memset
+ staa 1,x+ ; Load A into byte at X
+ dbne y,memset ; Decrement Y and loop if Y != 0
+ rts ; Return to caller
+
+;*************************************************************************
+; WriteString subroutine
+;
+; This subroutine will write a given null terminated string to the serial.
+;
+; Input: Address of null terminated string in X
+; Output: Null terminated string written to serial
+; Registers in use: X for the address of the string and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+WriteString
+ psha ; Save A to the stack
+writeLoop ldaa 1,x+ ; Load the byte at addr in X, then add 1
+ beq doneWrite ; if A == 0, branch to doneWrite
+ jsr putchar ; Jump to putchar to write byte to serial
+ bra writeLoop ; branch always to writeLoop
+doneWrite pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; ReadString subroutine
+;
+; This subroutine will read a string from the serial line to a given address.
+;
+; Input: Address of an array in X
+; Output: Null terminated string in the given array
+; Registers in use: X for the address of the string Y for the length of the string,
+; and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and getchar subroutine.
+;
+
+ReadString
+ psha ; Save accumulator A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save X to the stack
+readLoop jsr getchar ; Jump to putchar to write byte to serial
+ beq readLoop ; While A == 0, loop
+ cmpa #CR ; If A == CR, exit loop
+ beq doneRead ; Branch to doneRead if A == CR
+ staa 1,x+ ; Save the byte to the addr in X, then add 1
+ jsr putchar ; Write Character back to the terminal
+ dey ; Decrement Y by 1
+ beq doneRead ; If Y == 0, no more room, stop reading
+ bra readLoop ; branch always to readLoop
+doneRead ldaa #LF ; Load Line Feed into A
+ jsr putchar ; Write LF to terminal
+ pulx ; Restore X from the stack
+ pulY ; Restore Y from the stack
+ pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine writes a single byte to a serial line
+;
+; Input: A single ASCII byte in accumulator A
+; Output: Sends one character to SCI port
+; Registers in use: Accumulator A with input byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+putchar brclr SCISR1,#%10000000,putchar ; wait for transmit buffer empty
+ staa SCIDRL ; send a character
+ rts ; Return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine reads one byte from the SCI port
+;
+; Input: One byte from the SCI port
+; Output: One byte in accumulator A
+; Registers in use: Accumulator A for output byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+getchar brclr SCISR1,#%00100000,getchar7 ; If no input on SCI port, return 0
+ ldaa SCIDRL ; Read one byte from SCI port into A
+ rts ; Return to caller
+getchar7 clra ; Set A to 0
+ rts ; Return to caller
+
+*
+**************************************************************************
+* Data Section 2: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+badAddr dc.b 'invalid input, address',CR,LF,NULL ; Error message for bad address
+
+badData dc.b 'invalid input, data',CR,LF,NULL ; Error message for bad data
+
+badCom dc.b 'invalid input, command',CR,LF,NULL ; Error message for bad command
+
+; twMsg: welcome message when type writer loads
+twMsg dc.b 'Welcome to Type Writer, you may type below.',CR,LF
+ dc.b 'Restart to enter main menu again.',CR,LF,NULL
+
+
+; msg: this is the main option menu string
+msg dc.b 'S: Show the contents of memory location in word',CR,LF
+ dc.b 'W: Write the data word (not byte) to memory location',CR,LF
+ dc.b 'QUIT: Quit the main program, run Type writer program.',CR,LF,NULL
+
+ end ; last line of the file
diff --git a/cmpen472hw6_McDonnell/Sources/main.asm b/cmpen472hw6_McDonnell/Sources/main.asm
index e5656e9..5287ff0 100644
--- a/cmpen472hw6_McDonnell/Sources/main.asm
+++ b/cmpen472hw6_McDonnell/Sources/main.asm
@@ -6,7 +6,7 @@
*
* Revision: V1.0
*
-* Date: Mar. 1, 2025
+* Date: Feb. 28, 2025
*
* Programmer: Jacob McDonnell
*
@@ -615,7 +615,7 @@ zerosLoop staa 1,x+ ; Load A into byte at X
memset
staa 1,x+ ; Load A into byte at X
- dbne y,memset ; Decrement Y and loop if Y != 0
+ dbne y,memset ; Decrement Y and loop if Y != 0
rts ; Return to caller
;*************************************************************************
diff --git a/cmpen472hw6_McDonnell/bin/Project.abs b/cmpen472hw6_McDonnell/bin/Project.abs
index 83bccdd..bbdc8c7 100644
--- a/cmpen472hw6_McDonnell/bin/Project.abs
+++ b/cmpen472hw6_McDonnell/bin/Project.abs
Binary files differ
diff --git a/cmpen472hw6_McDonnell/bin/main.dbg b/cmpen472hw6_McDonnell/bin/main.dbg
index 066f6eb..4d945dc 100644
--- a/cmpen472hw6_McDonnell/bin/main.dbg
+++ b/cmpen472hw6_McDonnell/bin/main.dbg
@@ -6,7 +6,7 @@
*
* Revision: V1.0
*
-* Date: Mar. 1, 2025
+* Date: Feb. 28, 2025
*
* Programmer: Jacob McDonnell
*
@@ -615,7 +615,7 @@ zerosLoop staa 1,x+ ; Load A into byte at X
memset
staa 1,x+ ; Load A into byte at X
- dbne y,memset ; Decrement Y and loop if Y != 0
+ dbne y,memset ; Decrement Y and loop if Y != 0
rts ; Return to caller
;*************************************************************************
diff --git a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell.mcp b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell.mcp
index b8bca08..c36ca3d 100644
--- a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell.mcp
+++ b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell.mcp
Binary files differ
diff --git a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/CWSettingsWindows.stg b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/CWSettingsWindows.stg
index b7b7e30..f4fb317 100644
--- a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/CWSettingsWindows.stg
+++ b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/CWSettingsWindows.stg
Binary files differ
diff --git a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/ObjectCode/main.asm.o b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/ObjectCode/main.asm.o
index 83bccdd..bbdc8c7 100644
--- a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/ObjectCode/main.asm.o
+++ b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/ObjectCode/main.asm.o
Binary files differ
diff --git a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/TargetDataWindows.tdt b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/TargetDataWindows.tdt
index 94bdf6c..c2d5e3f 100644
--- a/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/TargetDataWindows.tdt
+++ b/cmpen472hw6_McDonnell/cmpen472hw6_McDonnell_Data/Standard/TargetDataWindows.tdt
Binary files differ
diff --git a/cmpen472hw7_McDonnell/ASM_layout.hwl b/cmpen472hw7_McDonnell/ASM_layout.hwl
new file mode 100644
index 0000000..83fc014
--- /dev/null
+++ b/cmpen472hw7_McDonnell/ASM_layout.hwl
@@ -0,0 +1,21 @@
+OPEN source 0 0 60 42
+Source < attributes TOOLTIP on,TOOLTIP_FORMAT signed,TOOLTIP_MODE details,FREEZE off,MARKS off
+OPEN assembly 60 0 40 30
+Assembly < attributes ADR on,CODE off,ABSADR on,SYMB off,FORMAT Auto,FREEZE off,TOPPC 0x3287
+OPEN procedure 60 60 40 17
+Procedure < attributes VALUES on,TYPES off
+OPEN register 60 30 40 30
+Register < attributes FORMAT AUTO,COMPLEMENT None
+OPEN memory 60 77 40 23
+Memory < attributes FORMAT hex,COMPLEMENT None,WORD 1,ASC on,ADR on,MODE automatic,UPDATERATE 10,ADDRESS 0x80
+OPEN data 0 42 60 28
+Data < attributes SCOPE global,COMPLEMENT None,FORMAT Symb,MODE automatic,SORT NotSort,UPDATERATE 10,NAMEWIDTH 16
+OPEN command 0 70 60 30
+Command < attributes CACHESIZE 1000
+OPEN Terminal 22 20 65 68
+Terminal < attributes CACHESIZE 1000
+Terminal < attributes SCI_DEFAULT_TEXT "Virtual SCI",SCI_CONNECTION 0,1,SCI_CONNECTION 1,0,SCI_CONNECTION 1,3,SCI_CONNECTION 3,1,SCI_PORT COM1,SCI_BAUD 9600,SCI_SHOW_PROTOCOL OFF,SCI_VIRTUAL_IN "Sci:2.SerialOutput",SCI_VIRTUAL_OUT "Sci:2.SerialInput",SCI_FILENAME_IN "",SCI_FILENAME_OUT ""
+bckcolor 50331647
+font 'Courier New' 9 BLACK
+AUTOSIZE on
+ACTIVATE "Assembly" "Memory" "Register" "Command" "Data" "Source" "Procedure" "Terminal"
diff --git a/cmpen472hw7_McDonnell/Default.mem b/cmpen472hw7_McDonnell/Default.mem
new file mode 100644
index 0000000..bf49148
--- /dev/null
+++ b/cmpen472hw7_McDonnell/Default.mem
Binary files differ
diff --git a/cmpen472hw7_McDonnell/Full_Chip_Simulation.hwc b/cmpen472hw7_McDonnell/Full_Chip_Simulation.hwc
new file mode 100644
index 0000000..f3ce7c9
--- /dev/null
+++ b/cmpen472hw7_McDonnell/Full_Chip_Simulation.hwc
@@ -0,0 +1 @@
+LOADMEM default.mem
diff --git a/cmpen472hw7_McDonnell/Full_Chip_Simulation.ini b/cmpen472hw7_McDonnell/Full_Chip_Simulation.ini
new file mode 100644
index 0000000..9b200fa
--- /dev/null
+++ b/cmpen472hw7_McDonnell/Full_Chip_Simulation.ini
@@ -0,0 +1,42 @@
+[Environment Variables]
+GENPATH={Project}Sources;{Compiler}lib\hc12c\src;{Compiler}lib\hc12c\include;{Compiler}lib\hc12c\lib;{Compiler}lib\xgatec\src;{Compiler}lib\xgatec\include;{Compiler}lib\xgatec\lib
+LIBPATH={Compiler}lib\hc12c\include;{Compiler}lib\xgatec\include
+OBJPATH={Project}bin
+TEXTPATH={Project}bin
+ABSPATH={Project}bin
+
+[HI-WAVE]
+Target=sim
+Layout=ASM_layout.hwl
+LoadDialogOptions=AUTOERASEANDFLASH NORUNAFTERLOAD
+CPU=HC12
+MainFrame=0,1,-1,-1,-1,-1,556,102,2213,1114
+TOOLBAR=57600 57601 32795 0 57635 57634 57637 0 57671 57669 0 32777 32776 32782 32780 32781 32778 0 32806
+Configuration=Full_Chip_Simulation.hwc
+Statusbar=1
+ShowToolbar=1
+Smallborder=0
+Hideheadline=0
+Hidetitle=0
+
+
+
+
+
+
+
+
+
+[Simulator]
+CMDFILE0=CMDFILE STARTUP ON ".\cmd\Full_Chip_Simulation_startup.cmd"
+
+[Simulator HC12]
+CMDFILE0=CMDFILE RESET ON ".\cmd\Full_Chip_Simulation_reset.cmd"
+CMDFILE1=CMDFILE PRELOAD ON ".\cmd\Full_Chip_Simulation_preload.cmd"
+CMDFILE2=CMDFILE POSTLOAD ON ".\cmd\Full_Chip_Simulation_postload.cmd"
+CMDFILE3=CMDFILE SETCPU ON ".\cmd\Full_Chip_Simulation_setcpu.cmd"
+HCS12_SUPPORT=1
+FCS=MC9S12C32
+ZEROTIMEATRESET=1
+OSCFREQUENCY=48000000
+DISPLAYTIME=0
diff --git a/cmpen472hw7_McDonnell/Sources/derivative.inc b/cmpen472hw7_McDonnell/Sources/derivative.inc
new file mode 100644
index 0000000..988343b
--- /dev/null
+++ b/cmpen472hw7_McDonnell/Sources/derivative.inc
@@ -0,0 +1,10 @@
+
+ ; Note: This file is recreated by the project wizard whenever the MCU is
+ ; changed and should not be edited by hand
+ ;
+
+ ; include derivative specific macros
+ INCLUDE 'mc9s12c32.inc'
+
+
+
diff --git a/cmpen472hw7_McDonnell/Sources/main.asm b/cmpen472hw7_McDonnell/Sources/main.asm
new file mode 100644
index 0000000..a85a1cc
--- /dev/null
+++ b/cmpen472hw7_McDonnell/Sources/main.asm
@@ -0,0 +1,611 @@
+**************************************************************************
+*
+* Title: Calculator
+*
+* Objective: CMPEN 472 Homework 7
+*
+* Revision: V1.0
+*
+* Date: Mar. 7, 2025
+*
+* Programmer: Jacob McDonnell
+*
+* Company: The Pennsylvania State University
+* Department of Computer Science and Engineering
+*
+* Algorithm: Simple Serial I/O, address poking and modifying
+*
+* Register Use: A & B to current byte, etc,
+* X & Y holds address of strings and length of string,
+* D to hold data and address of the memory location to work on.
+*
+* Memory Use: RAM Locations from $3000 for data,
+* RAM Locations from $3100 for program
+*
+* Input: Serial Port for User Input
+*
+* Output: Serial Port for String Output
+* Memory locations changed if modified by user
+*
+* Observation: This program is a simple 16-bit calculator. The input can be
+* any 4 digit positive decimal integer, the output can be negative.
+* The +, -, *, and / operators are supported. Only two numbers at
+* a time.
+*
+* Note: ON CSM-12C128 board,
+*
+* Comments: This program is developed and simulated using CodeWarrior
+* development software and targeted for Axion
+* Manufacturing's CSM-12C128 board running at 24MHz.
+*
+**************************************************************************
+* Parameter Declearation Section
+*
+* Export Symbols
+ xdef pgstart ; export 'pgstart' symbol
+ absentry pgstart ; for assembly entry point
+
+* Symbols and Macros
+PORTA equ $0000 ; i/o port A addresses
+DDRA equ $0002 ; data direction register for PORTA
+PORTB equ $0001 ; i/o port B addresses
+DDRB equ $0003 ; data direction register for PORTB
+
+SCIBDH equ $00C8 ; Serial port (SCI) Baud Register H
+SCIBDL equ $00C9 ; Serial port (SCI) Baud Register L
+SCICR2 equ $00CB ; Serial port (SCI) Control Register 2
+SCISR1 equ $00CC ; Serial port (SCI) Status Register 1
+SCIDRL equ $00CF ; Serial port (SCI) Data Register
+
+CR equ $0d ; carriage return, ASCII 'Return' key
+LF equ $0a ; line feed, ASCII 'next line' character
+NULL equ $00 ; NULL Terminator character
+
+**************************************************************************
+* Data Section: address used [ $3000 to $30FF ] RAM Memory
+*
+ org $3000 ; Reserved RAM memory starting address
+ ; for Data for CMPEN 472 class
+numBuf dc.w $0000 ; Memory location for addition and subtraction
+ ; in Solve subroutine
+
+operator dc.b $0000 ; Operator character for VerifyInput
+
+buffer ds.b $0010 ; Array of 16 bytes to read a string
+ dc.b NULL ; NULL terminated
+lenBuf dc.w $0010 ; Length of buffer array
+
+buffer2 ds.b $0010 ; Array of 16 bytes for reading and reversal
+ dc.b NULL ; NULL terminated
+lenBuf2 dc.w $0010 ; length of buffer2
+
+*
+* There is a section Data Section at the end of the file
+**************************************************************************
+* Program Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+ org $3100 ; Program start address, in RAM
+pgstart lds #$3100 ; initialize the stack pointer
+
+ ldaa #%11110001 ; LED 1,2,3,4 at PORTB bit 4,5,6,7
+ staa DDRB ; set PORTB bit 4,5,6,7 as output
+
+ ldaa #$0C ; Enable SCI port Tx and Rx units
+ staa SCICR2 ; disable SCI interrupts
+
+ ldd #$0001 ; Set SCI Baud Register = $0001 => 1.5M baud at 24MHz (for simulation)
+ std SCIBDH ; SCI port baud rate change
+
+ ldx #msg ; Load the address of the welcome message into X
+ jsr WriteString ; Write the string to the serial console
+
+mainLoop
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr Zeros ; Fill the buffer with zeros
+
+ ldx #prompt ; Load Address of prompt string into X
+ jsr WriteString ; Write string to serial console
+
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr ReadString ; Read a line from the serial console
+
+ ldx #buffer ; Load the address of the buffer into X
+ jsr VerifyInput ; Verify user input
+ beq mainLoop ; Invalid input, jump back to loop
+
+ ldx #buffer ; Load the address of the buffer into X
+ jsr Solve ; Jump to Solve to solve the user input
+ bra mainLoop ; Loop back to mainLoop always
+
+**************************************************************************
+* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+;*************************************************************************
+; Solve subroutine
+;
+; This subroutine will solve the math equation in the given string.
+;
+; Input: Address of null terminated string in X.
+; Output: No Output, Control flow changed to proper subroutine.
+; Registers in use: X for the address of the string, A & B to read characters from
+; from the string.
+; Memory locations in use: Memory Address for serial line, address of the string, numBuf word
+;
+; Comments: This subroutine EXPECTS the input to be valid. RUN VerifyInput BEFORE
+; TO MAKE SURE THE STRING IS VALID, OTHERWISE THERE WILL BE ERRORS.
+;
+
+Solve
+ pshy ; Save Y to the stack
+ pshd ; Save D to the stack
+ pshx ; Save X to the stack
+ jsr ReadDecimal ; Read First number
+ pshy ; Save Y to the stack
+ ldaa -1,x ; Read operator from X and save to A
+ jsr ReadDecimal ; Read First number
+ cmpa #'+' ; Compare A to '+'
+ beq sAdd ; Jump to sAdd to add the numbers
+ cmpa #'-' ; Compare A to '-'
+ beq sSub ; Jump to sSub to add the numbers
+ cmpa #'*' ; Compare A to '*'
+ beq sMul ; Jump to sMul to add the numbers
+ exg y,x ; Exchange X and Y
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ idiv ; Divide D/X => X
+ exg x,d ; Exchange X & D
+ bra sDone ; Jump to sDone
+sAdd sty numBuf ; Save Y to numBuf
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ addd numBuf ; Add D and numBuf
+ andcc #%00000010 ; And CCR to read just Overflow bit
+ psha ; Save A to the stack
+ tpa ; transfer CCR to A
+ cmpa #2 ; Compare A to 2 to read overflow bit
+ beq sOverflow ; If overflow bit set, jump to sOverflow
+ pula ; Restore A from the stack
+ bra sDone ; Jump to sDone
+sSub sty numBuf ; Save Y to numBuf
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ subd numBuf ; Subtract D and numBuf
+ andcc #%00000010 ; And CCR to read just Overflow bit
+ psha ; Save A to the stack
+ tpa ; transfer CCR to A
+ cmpa #2 ; Compare A to 2 to read overflow bit
+ beq sOverflow ; If overflow bit set, jump to sOverflow
+ pula ; Restore A from the stack
+ bra sDone ; Jump to sDone
+sMul exg y,d ; Exchange Y and D
+ puly ; Restore Y from the stack
+ emul ; Multiply Y*D => Y:D
+ cpy #0 ; Compare Y to 0
+ bne sOverflow ; If Y != 0, Overflow
+sDone pulx ; Restore X from the stack
+ jsr WriteString ; Write original equation to serial console
+ psha ; Save A to the stack
+ ldaa #'=' ; Load '=' into A
+ jsr putchar ; Print '=' to serial console
+ pula ; Restore A from the stack
+ ldy #buffer ; Load address of buffer into Y
+ jsr PrintDecimalWord; Print the answer to the Serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write CR
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write CR
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+sOverflow pulx ; Restore X from the stack
+ pshx ; Save X to the stack
+ jsr WriteString ; Write original string to serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write CR
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write CR
+ ldx #overflow ; Load address of overflow string into X
+ jsr WriteString ; Write overflow string to serial
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; VerifyInput subroutine
+;
+; This subroutine will verify the user input is valid.
+;
+; Input: An address of a Null terminated string in register X.
+; Output: If valid Zero bit = 0 in CCR, if invalid, Zero bit = 1
+; and the string is outputed up to the error on the serial
+; console with an error message.
+; Registers in use: X for the address of the string, A for reading characters.
+; Y to count the number of digits in a number, & B to count the number of numbers
+; Memory locations in use: Memory Address for serial line, address of the string, 1 byte for operator
+;
+; Comments: This subroutine will modify the user string if invalid.
+;
+
+VerifyInput
+ pshy ; Save Y to the stack
+ pshd ; Save D to the stack
+ pshx ; Save X to the stack
+ clrb ; Set B to Zero
+ stab operator ; Clear operator
+ ldy #0 ; Load Zero into Y
+vNumLoop ldaa 1,x+ ; Load character from X into A
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; If A > '9', not valid string
+ cmpa #'0' ; Compare A to '0'
+ blt vIsOp ; If A < '0', check if operator
+ iny ; Increment Y by 1 to count numbers
+ cpy #4 ; Compare Y to 4
+ bhi vInvalid ; If greater than 4, invalid
+ bra vNumLoop ; Loop back to check for more digits
+vIsOp cmpa #'+' ; Compare A to '+'
+ beq vOp ; This is an operator
+ cmpa #'-' ; Compare A to '-'
+ beq vOp ; This is an operator
+ cmpa #'*' ; Compare A to '*'
+ beq vOp ; This is an operator
+ cmpa #'/' ; Compare A to '/'
+ beq vOp ; This is an operator
+ cmpa #NULL ; Compare A to NULL character
+ beq vEndOfLine ; Check if end of line
+vInvalid clra ; Set A to zero
+ staa 0,X ; Write Null terminator to X
+ pulx ; Restore X from the stack
+ pshx ; Save X to the stack
+ jsr WriteString ; Write invalid string to serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write the character
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write the character
+ ldx #invalidStr ; Load address of invalid string into X
+ jsr WriteString ; Write invalid string to serial console
+ ldaa #4 ; Load 4 into A to set zero bit
+ tap ; Transfer A to CCR
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+vOp staa operator ; Store operator in operator buffer
+ ldaa -2,x ; Load previous character into A
+ cmpa #'0' ; Compare A to '0'
+ blt vInvalid ; Invalid string since previous is not number
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; Invalid string since previous is not number
+ addb #1 ; Increment B by 1
+ cmpb #1 ; Compare B to 1
+ bhi vInvalid ; Invalid string since B > 1 and we have another operator
+ ldy #0 ; Set Y to 0
+ bra vNumLoop ; Check for next number
+vEndOfLine ldaa -2,x ; Load previous character into A
+ cmpa #'0' ; Compare A to '0'
+ blt vInvalid ; Invalid string since previous is not number
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; Invalid string since previous is not number
+ ldaa operator ; Load operator character from buffer
+ beq vInvalid ; If operator buffer is zero, invalid
+ clra ; Set A to zero
+ tap ; Transfer A to CCR
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; ReadDecimal subroutine
+;
+; This subroutine will read an ASCII string of a number in decimal and convert it to
+; its value.
+;
+; Input: A memory address in register X.
+; Output: The value of the number in the Y register, and any errors printed
+; to the serial line. Zero bit is set if error occurs.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine will return the value in the Y register, and if an error occurs,
+; the Zero bit in the CCR will be set.
+;
+
+ReadDecimal
+ pshd ; Save D to the stack
+ ldy #0 ; Clear Y register
+dHLoop ldab 1,x+ ; Read Next character from X
+ beq dHDone ; If B == 0, exit loop
+ cmpb #'+' ; Compare B to '+'
+ beq dHDone ; If B == '+', end of number
+ cmpb #'-' ; Compare B to '-'
+ beq dHDone ; If B == '-', end of number
+ cmpb #'*' ; Compare B to '*'
+ beq dHDone ; If B == '+', end of number
+ cmpb #'/' ; Compare B to '/'
+ beq dHDone ; If B == '-', end of number
+ cmpb #' ' ; Compare B to space character
+ beq dHDone ; If B == ' ', exit loop
+ cmpb #'0' ; Compare B to '0' character
+ blt dHError ; If B < '0', bad address, exit loop
+ cmpb #'9' ; Compare B to '9' character
+ bhi dHError ; If B > '9', check if 'A'-'F' characters
+ subb #'0' ; Subtract '0' from B to get true value
+ pshb ; Save B to the stack
+ ldd #10 ; load 10 into D
+ emul ; Multiply Y and D
+ exg d,y ; Transfer data from D to Y
+ pulb ; Restore b from the stack
+ aby ; Add B to Y
+ bra dHLoop ; Branch always to rHLoop
+dHDone clra ; clear A accumulator
+ tap ; Transfer A into CCR to clear zero bit
+ puld ; Restore D from the stack
+ rts ; Return to caller
+dHError ldaa #4 ; Load 4 into A to set zero bit in CCR
+ tap ; Transfer A into CCR to set zero bit and warn error
+ puld ; Restore D from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; strrev subroutine
+;
+; This subroutine will reverse a string from one buffer into another.
+;
+; Input: Address of null terminated string in X, address of a large enough
+; buffer in Y.
+; Output: The string in X reversed in Y.
+; Registers in use: X for the address of the string, Y for the address of the buffer,
+; A to read characters from the string.
+; Memory locations in use: Memory Address for serial line, address of the string & buffer
+;
+; Comments: This subroutine will not check that the output buffer is large enough, that
+; is the job of the caller.
+;
+
+strrev
+ pshx ; Save X to the stack
+ pshy ; Save Y to the stack
+ psha ; Save A to the stack
+revLoop ldaa 1,y- ; Load Character from Y into A, decrement Y
+ beq revDone ; If Character is 0, exit loop
+ staa 1,x+ ; Save character in address in X, increment X
+ bra revLoop ; Loop back always
+ clra ; Set A to Zero
+revDone staa 1,x+ ; Copy Null terminator into new string
+ pula ; Restore A from the stack
+ puly ; Restore Y from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintDecimalWord subroutine
+;
+; This subroutine will print a given word of data to the serial in binary.
+;
+; Input: 1 word of data in register D, Buffer Address in Y
+; Output: Decimal representation of the data on the serial console
+; Registers in use: Y for the address of the buffer, X to count the number of bits
+; written and for division, D for the input, A for characters.
+; Memory locations in use: Memory addresses for serial, and operator to hold sign
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+PrintDecimalWord
+ pshx ; Save X to the stack
+ pshd ; Save D (A:B) to the stack
+ pshy ; Save Y to the stack
+ cpd #0 ; Compare D to zero
+ beq dIsZero ; Branch to hIsZero
+ blt dIsNegative ; If D < 0, Jump to dIsNegative
+dAfterNeg psha ; Save A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save x to the stack
+ ldaa #'0' ; Load the '0' character into A
+ ldx #buffer2 ; Load the address of buffer2 into X
+ ldy #5 ; Load 5 into Y
+ jsr memset ; Write '0' to the first 5 bytes in buffer2
+ pulx ; Restore X from the stack
+ puly ; Restore Y from the stack
+ clra ; Set A to zero
+ staa 0,y ; Load Zero into Y for Null Terminator
+ pula ; Restore A from the stack
+dPrintLoop ldx #10 ; Load 10 in X for division
+ idiv ; Divide D / 10 to get Hex Digit
+ cpx #0 ; Compare X to 0
+ beq dCheck ; If X == 0, branch to check D is zero
+dDNotZero addb #'0' ; Add '0' to B to get ASCII Character
+ stab 1,+y ; Save character from B to Y
+ exg X,D ; Swap values in X and D
+ bra dPrintLoop ; Loop to hPrintLoop
+dCheck cpd #0 ; Compare D to 0
+ bne dDNotZero ; If D != 0, branch back to hDNotZero
+dPrintDone ldaa operator ; Load operator into A to see if negative
+ cmpa #'-' ; Compare A to '-'
+ bne dNotNeg ; If A != '-', jump to dNotNeg
+ staa 1,+y ; Save '-' into buffer
+dNotNeg ldx #buffer2 ; Load the address of buffer2 in X
+ jsr strrev ; Reverse string in Y in buffer in X
+ jsr WriteString ; Jump to write string to write the number
+ ldy lenBuf2 ; Load the length of buffer2 into Y
+ ldx #buffer2 ; Load the address of buffer2 into X
+ jsr Zeros ; Fill buffer2 with zeros
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+dIsZero ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print character to the screen
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+dIsNegative psha ; Save A to the stack
+ ldaa #'-' ; Load '-' into A
+ staa operator ; Save '-' to operator buffer
+ pula ; Restore A from the stack
+ nega ; Two's complement of A
+ suba #1 ; Subtract 1 from A
+ negb ; Two'complement of B
+ subb #1 ; Subtract 1 from B
+ addd #1 ; Add 1 to D
+ bra dAfterNeg ; Jump back to dAfterNeg
+
+;*************************************************************************
+; Zeros subroutine
+;
+; This subroutine will write zeros to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y
+; Output: Zeros in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for 0
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+Zeros
+ psha ; Save A to the Stack
+ clra ; Clear A
+zerosLoop staa 1,x+ ; Load A into byte at X
+ dbne y,zerosLoop ; Decrement Y and loop if Y != 0
+ pula ; Restore A from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; memset subroutine
+;
+; This subroutine will write a given byte to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y, the byte in A
+; Output: The given byte in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for the given byte
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+memset
+ staa 1,x+ ; Load A into byte at X
+ dbne y,memset ; Decrement Y and loop if Y != 0
+ rts ; Return to caller
+
+;*************************************************************************
+; WriteString subroutine
+;
+; This subroutine will write a given null terminated string to the serial.
+;
+; Input: Address of null terminated string in X
+; Output: Null terminated string written to serial
+; Registers in use: X for the address of the string and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+WriteString
+ psha ; Save A to the stack
+writeLoop ldaa 1,x+ ; Load the byte at addr in X, then add 1
+ beq doneWrite ; if A == 0, branch to doneWrite
+ jsr putchar ; Jump to putchar to write byte to serial
+ bra writeLoop ; branch always to writeLoop
+doneWrite pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; ReadString subroutine
+;
+; This subroutine will read a string from the serial line to a given address.
+;
+; Input: Address of an array in X
+; Output: Null terminated string in the given array
+; Registers in use: X for the address of the string Y for the length of the string,
+; and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and getchar subroutine.
+;
+
+ReadString
+ psha ; Save accumulator A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save X to the stack
+readLoop jsr getchar ; Jump to putchar to write byte to serial
+ beq readLoop ; While A == 0, loop
+ cmpa #CR ; If A == CR, exit loop
+ beq doneRead ; Branch to doneRead if A == CR
+ staa 1,x+ ; Save the byte to the addr in X, then add 1
+ jsr putchar ; Write Character back to the terminal
+ dey ; Decrement Y by 1
+ beq doneRead ; If Y == 0, no more room, stop reading
+ bra readLoop ; branch always to readLoop
+doneRead ldaa #LF ; Load Line Feed into A
+ jsr putchar ; Write LF to terminal
+ pulx ; Restore X from the stack
+ pulY ; Restore Y from the stack
+ pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine writes a single byte to a serial line
+;
+; Input: A single ASCII byte in accumulator A
+; Output: Sends one character to SCI port
+; Registers in use: Accumulator A with input byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+putchar brclr SCISR1,#%10000000,putchar ; wait for transmit buffer empty
+ staa SCIDRL ; send a character
+ rts ; Return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine reads one byte from the SCI port
+;
+; Input: One byte from the SCI port
+; Output: One byte in accumulator A
+; Registers in use: Accumulator A for output byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+getchar brclr SCISR1,#%00100000,getchar7 ; If no input on SCI port, return 0
+ ldaa SCIDRL ; Read one byte from SCI port into A
+ rts ; Return to caller
+getchar7 clra ; Set A to 0
+ rts ; Return to caller
+
+*
+**************************************************************************
+* Data Section 2: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+invalidStr dc.b 'Invalid input format',CR,LF,NULL ; Invalid input error message
+
+prompt dc.b 'Ecalc> ',NULL ; Prompt string for calculator
+
+overflow dc.b 'Overflow Error',CR,LF,NULL ; Overflow error message
+
+; msg: this is the main option menu string
+msg dc.b 'Rules for Calculator:',CR,LF
+ dc.b '1) Input positive decimal integer numbers only',CR,LF
+ dc.b '2) Input and output maximum four digit numbers only',CR,LF
+ dc.b '3) Valid operators are: +, -, *, and /',CR,LF
+ dc.b '4) Input number with leading zero is OK',CR,LF
+ dc.b '5) Input only two numbers and one operator in between, no spaces',CR,LF
+ dc.b '6) Show Ecalc> prompt and echo print user keystrokes unltil Return key',CR,LF
+ dc.b '7) Repeat print user input and print answer after the = sign',CR,LF
+ dc.b '8) In case of an invalid input format, repeat print the user input until the error character',CR,LF
+ dc.b '9) In case of an invalid input format, print error message on the next line: Invalid input format',CR,LF
+ dc.b '10) Keep 16bit internal binary number format, detect and flag overflow error',CR,LF
+ dc.b '11) Use integer division and truncate any fraction',CR,LF,NULL
+
+ end ; last line of the file
diff --git a/cmpen472hw7_McDonnell/bin/Project.abs b/cmpen472hw7_McDonnell/bin/Project.abs
new file mode 100644
index 0000000..6d2d9d3
--- /dev/null
+++ b/cmpen472hw7_McDonnell/bin/Project.abs
Binary files differ
diff --git a/cmpen472hw7_McDonnell/bin/Project.abs.phy b/cmpen472hw7_McDonnell/bin/Project.abs.phy
new file mode 100644
index 0000000..e120fa3
--- /dev/null
+++ b/cmpen472hw7_McDonnell/bin/Project.abs.phy
@@ -0,0 +1,2 @@
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diff --git a/cmpen472hw7_McDonnell/bin/Project.abs.s19 b/cmpen472hw7_McDonnell/bin/Project.abs.s19
new file mode 100644
index 0000000..45b3fbd
--- /dev/null
+++ b/cmpen472hw7_McDonnell/bin/Project.abs.s19
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diff --git a/cmpen472hw7_McDonnell/bin/main.dbg b/cmpen472hw7_McDonnell/bin/main.dbg
new file mode 100644
index 0000000..8cd24da
--- /dev/null
+++ b/cmpen472hw7_McDonnell/bin/main.dbg
@@ -0,0 +1,609 @@
+**************************************************************************
+*
+* Title: Calculator
+*
+* Objective: CMPEN 472 Homework 7
+*
+* Revision: V1.0
+*
+* Date: Mar. 7, 2025
+*
+* Programmer: Jacob McDonnell
+*
+* Company: The Pennsylvania State University
+* Department of Computer Science and Engineering
+*
+* Algorithm: Simple Serial I/O, address poking and modifying
+*
+* Register Use: A & B to current byte, etc,
+* X & Y holds address of strings and length of string,
+* D to hold data and address of the memory location to work on.
+*
+* Memory Use: RAM Locations from $3000 for data,
+* RAM Locations from $3100 for program
+*
+* Input: Serial Port for User Input
+*
+* Output: Serial Port for String Output
+* Memory locations changed if modified by user
+*
+* Observation: This program is a simple 16-bit calculator. The input can be
+* any 4 digit positive decimal integer, the output can be negative.
+* The +, -, *, and / operators are supported. Only two numbers at
+* a time.
+*
+* Note: ON CSM-12C128 board,
+*
+* Comments: This program is developed and simulated using CodeWarrior
+* development software and targeted for Axion
+* Manufacturing's CSM-12C128 board running at 24MHz.
+*
+**************************************************************************
+* Parameter Declearation Section
+*
+* Export Symbols
+ xdef pgstart ; export 'pgstart' symbol
+ absentry pgstart ; for assembly entry point
+
+* Symbols and Macros
+PORTA equ $0000 ; i/o port A addresses
+DDRA equ $0002 ; data direction register for PORTA
+PORTB equ $0001 ; i/o port B addresses
+DDRB equ $0003 ; data direction register for PORTB
+
+SCIBDH equ $00C8 ; Serial port (SCI) Baud Register H
+SCIBDL equ $00C9 ; Serial port (SCI) Baud Register L
+SCICR2 equ $00CB ; Serial port (SCI) Control Register 2
+SCISR1 equ $00CC ; Serial port (SCI) Status Register 1
+SCIDRL equ $00CF ; Serial port (SCI) Data Register
+
+CR equ $0d ; carriage return, ASCII 'Return' key
+LF equ $0a ; line feed, ASCII 'next line' character
+NULL equ $00 ; NULL Terminator character
+
+**************************************************************************
+* Data Section: address used [ $3000 to $30FF ] RAM Memory
+*
+ org $3000 ; Reserved RAM memory starting address
+ ; for Data for CMPEN 472 class
+numBuf dc.w $0000 ; Memory location for addition and subtraction
+ ; in Solve subroutine
+
+operator dc.b $0000 ; Operator character for VerifyInput
+
+buffer ds.b $0010 ; Array of 16 bytes to read a string
+ dc.b NULL ; NULL terminated
+lenBuf dc.w $0010 ; Length of buffer array
+
+buffer2 ds.b $0010 ; Array of 16 bytes for reading and reversal
+ dc.b NULL ; NULL terminated
+lenBuf2 dc.w $0010 ; length of buffer2
+
+*
+* There is a section Data Section at the end of the file
+**************************************************************************
+* Program Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+ org $3100 ; Program start address, in RAM
+pgstart lds #$3100 ; initialize the stack pointer
+
+ ldaa #%11110001 ; LED 1,2,3,4 at PORTB bit 4,5,6,7
+ staa DDRB ; set PORTB bit 4,5,6,7 as output
+
+ ldaa #$0C ; Enable SCI port Tx and Rx units
+ staa SCICR2 ; disable SCI interrupts
+
+ ldd #$0001 ; Set SCI Baud Register = $0001 => 1.5M baud at 24MHz (for simulation)
+ std SCIBDH ; SCI port baud rate change
+
+ ldx #msg ; Load the address of the welcome message into X
+ jsr WriteString ; Write the string to the serial console
+
+mainLoop
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr Zeros ; Fill the buffer with zeros
+
+ ldx #prompt ; Load Address of prompt string into X
+ jsr WriteString ; Write string to serial console
+
+ ldx #buffer ; Load the address of the buffer into X
+ ldy lenBuf ; Load the length of the buffer into Y
+ jsr ReadString ; Read a line from the serial console
+
+ ldx #buffer ; Load the address of the buffer into X
+ jsr VerifyInput ; Verify user input
+ beq mainLoop ; Invalid input, jump back to loop
+
+ ldx #buffer ; Load the address of the buffer into X
+ jsr Solve ; Jump to Solve to solve the user input
+ bra mainLoop ; Loop back to mainLoop always
+
+**************************************************************************
+* Subroutine Section: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+;*************************************************************************
+; Solve subroutine
+;
+; This subroutine will solve the math equation in the given string.
+;
+; Input: Address of null terminated string in X.
+; Output: No Output, Control flow changed to proper subroutine.
+; Registers in use: X for the address of the string, A & B to read characters from
+; from the string.
+; Memory locations in use: Memory Address for serial line, address of the string, numBuf word
+;
+; Comments: This subroutine EXPECTS the input to be valid. RUN VerifyInput BEFORE
+; TO MAKE SURE THE STRING IS VALID, OTHERWISE THERE WILL BE ERRORS.
+;
+
+Solve
+ pshy ; Save Y to the stack
+ pshd ; Save D to the stack
+ pshx ; Save X to the stack
+ jsr ReadDecimal ; Read First number
+ pshy ; Save Y to the stack
+ ldaa -1,x ; Read operator from X and save to A
+ jsr ReadDecimal ; Read First number
+ cmpa #'+' ; Compare A to '+'
+ beq sAdd ; Jump to sAdd to add the numbers
+ cmpa #'-' ; Compare A to '-'
+ beq sSub ; Jump to sSub to add the numbers
+ cmpa #'*' ; Compare A to '*'
+ beq sMul ; Jump to sMul to add the numbers
+ exg y,x ; Exchange X and Y
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ idiv ; Divide D/X => X
+ exg x,d ; Exchange X & D
+ bra sDone ; Jump to sDone
+sAdd sty numBuf ; Save Y to numBuf
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ addd numBuf ; Add D and numBuf
+ andcc #%00000010 ; And CCR to read just Overflow bit
+ psha ; Save A to the stack
+ tpa ; transfer CCR to A
+ cmpa #2 ; Compare A to 2 to read overflow bit
+ beq sOverflow ; If overflow bit set, jump to sOverflow
+ pula ; Restore A from the stack
+ bra sDone ; Jump to sDone
+sSub sty numBuf ; Save Y to numBuf
+ puly ; Restore Y from the stack
+ exg y,d ; Exchange Y and D
+ subd numBuf ; Subtract D and numBuf
+ andcc #%00000010 ; And CCR to read just Overflow bit
+ psha ; Save A to the stack
+ tpa ; transfer CCR to A
+ cmpa #2 ; Compare A to 2 to read overflow bit
+ beq sOverflow ; If overflow bit set, jump to sOverflow
+ pula ; Restore A from the stack
+ bra sDone ; Jump to sDone
+sMul exg y,d ; Exchange Y and D
+ puly ; Restore Y from the stack
+ emul ; Multiply Y*D => Y:D
+ cpy #0 ; Compare Y to 0
+ bne sOverflow ; If Y != 0, Overflow
+sDone pulx ; Restore X from the stack
+ jsr WriteString ; Write original equation to serial console
+ psha ; Save A to the stack
+ ldaa #'=' ; Load '=' into A
+ jsr putchar ; Print '=' to serial console
+ pula ; Restore A from the stack
+ ldy #buffer ; Load address of buffer into Y
+ jsr PrintDecimalWord; Print the answer to the Serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write CR
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write CR
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+sOverflow pulx ; Restore X from the stack
+ pshx ; Save X to the stack
+ jsr WriteString ; Write original string to serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write CR
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write CR
+ ldx #overflow ; Load address of overflow string into X
+ jsr WriteString ; Write overflow string to serial
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; VerifyInput subroutine
+;
+; This subroutine will verify the user input is valid.
+;
+; Input: An address of a Null terminated string in register X.
+; Output: If valid Zero bit = 0 in CCR, if invalid, Zero bit = 1
+; and the string is outputed up to the error on the serial
+; console with an error message.
+; Registers in use: X for the address of the string, A for reading characters.
+; Y to count the number of digits in a number, & B to count the number of numbers
+; Memory locations in use: Memory Address for serial line, address of the string, 1 byte for operator
+;
+; Comments: This subroutine will modify the user string if invalid.
+;
+
+VerifyInput
+ pshy ; Save Y to the stack
+ pshd ; Save D to the stack
+ pshx ; Save X to the stack
+ clrb ; Set B to Zero
+ stab operator ; Clear operator
+ ldy #0 ; Load Zero into Y
+vNumLoop ldaa 1,x+ ; Load character from X into A
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; If A > '9', not valid string
+ cmpa #'0' ; Compare A to '0'
+ blt vIsOp ; If A < '0', check if operator
+ iny ; Increment Y by 1 to count numbers
+ cpy #4 ; Compare Y to 4
+ bhi vInvalid ; If greater than 4, invalid
+ bra vNumLoop ; Loop back to check for more digits
+vIsOp cmpa #'+' ; Compare A to '+'
+ beq vOp ; This is an operator
+ cmpa #'-' ; Compare A to '-'
+ beq vOp ; This is an operator
+ cmpa #'*' ; Compare A to '*'
+ beq vOp ; This is an operator
+ cmpa #'/' ; Compare A to '/'
+ beq vOp ; This is an operator
+ cmpa #NULL ; Compare A to NULL character
+ beq vEndOfLine ; Check if end of line
+vInvalid clra ; Set A to zero
+ staa 0,X ; Write Null terminator to X
+ pulx ; Restore X from the stack
+ pshx ; Save X to the stack
+ jsr WriteString ; Write invalid string to serial console
+ ldaa #CR ; Load CR into A
+ jsr putchar ; Jump to putchar to write the character
+ ldaa #LF ; Load LF into A
+ jsr putchar ; Jump to putchar to write the character
+ ldx #invalidStr ; Load address of invalid string into X
+ jsr WriteString ; Write invalid string to serial console
+ ldaa #4 ; Load 4 into A to set zero bit
+ tap ; Transfer A to CCR
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+vOp staa operator ; Store operator in operator buffer
+ ldaa -2,x ; Load previous character into A
+ cmpa #'0' ; Compare A to '0'
+ blt vInvalid ; Invalid string since previous is not number
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; Invalid string since previous is not number
+ addb #1 ; Increment B by 1
+ cmpb #1 ; Compare B to 1
+ bhi vInvalid ; Invalid string since B > 1 and we have another operator
+ ldy #0 ; Set Y to 0
+ bra vNumLoop ; Check for next number
+vEndOfLine ldaa -2,x ; Load previous character into A
+ cmpa #'0' ; Compare A to '0'
+ blt vInvalid ; Invalid string since previous is not number
+ cmpa #'9' ; Compare A to '9'
+ bhi vInvalid ; Invalid string since previous is not number
+ ldaa operator ; Load operator character from buffer
+ beq vInvalid ; If operator buffer is zero, invalid
+ clra ; Set A to zero
+ tap ; Transfer A to CCR
+ pulx ; Restore X from the stack
+ puld ; Restore D from the stack
+ puly ; Restore Y from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; ReadDecimal subroutine
+;
+; This subroutine will read an ASCII string of a number in decimal and convert it to
+; its value.
+;
+; Input: A memory address in register X.
+; Output: The value of the number in the Y register, and any errors printed
+; to the serial line. Zero bit is set if error occurs.
+; Registers in use: X for the address of the contents and for a buffer while printing,
+; D for multiplication, B for the character, Y for output value.
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine will return the value in the Y register, and if an error occurs,
+; the Zero bit in the CCR will be set.
+;
+
+ReadDecimal
+ pshd ; Save D to the stack
+ ldy #0 ; Clear Y register
+dHLoop ldab 1,x+ ; Read Next character from X
+ beq dHDone ; If B == 0, exit loop
+ cmpb #'+' ; Compare B to '+'
+ beq dHDone ; If B == '+', end of number
+ cmpb #'-' ; Compare B to '-'
+ beq dHDone ; If B == '-', end of number
+ cmpb #'*' ; Compare B to '*'
+ beq dHDone ; If B == '+', end of number
+ cmpb #'/' ; Compare B to '/'
+ beq dHDone ; If B == '-', end of number
+ cmpb #' ' ; Compare B to space character
+ beq dHDone ; If B == ' ', exit loop
+ cmpb #'0' ; Compare B to '0' character
+ blt dHError ; If B < '0', bad address, exit loop
+ cmpb #'9' ; Compare B to '9' character
+ bhi dHError ; If B > '9', check if 'A'-'F' characters
+ subb #'0' ; Subtract '0' from B to get true value
+ pshb ; Save B to the stack
+ ldd #10 ; load 10 into D
+ emul ; Multiply Y and D
+ exg d,y ; Transfer data from D to Y
+ pulb ; Restore b from the stack
+ aby ; Add B to Y
+ bra dHLoop ; Branch always to rHLoop
+dHDone clra ; clear A accumulator
+ tap ; Transfer A into CCR to clear zero bit
+ puld ; Restore D from the stack
+ rts ; Return to caller
+dHError ldaa #4 ; Load 4 into A to set zero bit in CCR
+ tap ; Transfer A into CCR to set zero bit and warn error
+ puld ; Restore D from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; strrev subroutine
+;
+; This subroutine will reverse a string from one buffer into another.
+;
+; Input: Address of null terminated string in X, address of a large enough
+; buffer in Y.
+; Output: The string in X reversed in Y.
+; Registers in use: X for the address of the string, Y for the address of the buffer,
+; A to read characters from the string.
+; Memory locations in use: Memory Address for serial line, address of the string & buffer
+;
+; Comments: This subroutine will not check that the output buffer is large enough, that
+; is the job of the caller.
+;
+
+strrev
+ pshx ; Save X to the stack
+ pshy ; Save Y to the stack
+ psha ; Save A to the stack
+revLoop ldaa 1,y- ; Load Character from Y into A, decrement Y
+ beq revDone ; If Character is 0, exit loop
+ staa 1,x+ ; Save character in address in X, increment X
+ bra revLoop ; Loop back always
+ clra ; Set A to Zero
+revDone staa 1,x+ ; Copy Null terminator into new string
+ pula ; Restore A from the stack
+ puly ; Restore Y from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; PrintDecimalWord subroutine
+;
+; This subroutine will print a given word of data to the serial in binary.
+;
+; Input: 1 word of data in register D, Buffer Address in Y
+; Output: Decimal representation of the data on the serial console
+; Registers in use: Y for the address of the buffer, X to count the number of bits
+; written and for division, D for the input, A for characters.
+; Memory locations in use: Memory addresses for serial.
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+PrintDecimalWord
+ pshx ; Save X to the stack
+ pshd ; Save D (A:B) to the stack
+ pshy ; Save Y to the stack
+ cpd #0 ; Compare D to zero
+ beq dIsZero ; Branch to hIsZero
+ blt dIsNegative ; If D < 0, Jump to dIsNegative
+dAfterNeg psha ; Save A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save x to the stack
+ ldaa #'0' ; Load the '0' character into A
+ ldx #buffer2 ; Load the address of buffer2 into X
+ ldy #5 ; Load 5 into Y
+ jsr memset ; Write '0' to the first 5 bytes in buffer2
+ pulx ; Restore X from the stack
+ puly ; Restore Y from the stack
+ clra ; Set A to zero
+ staa 0,y ; Load Zero into Y for Null Terminator
+ pula ; Restore A from the stack
+dPrintLoop ldx #10 ; Load 10 in X for division
+ idiv ; Divide D / 10 to get Hex Digit
+ cpx #0 ; Compare X to 0
+ beq dCheck ; If X == 0, branch to check D is zero
+dDNotZero addb #'0' ; Add '0' to B to get ASCII Character
+ stab 1,+y ; Save character from B to Y
+ exg X,D ; Swap values in X and D
+ bra dPrintLoop ; Loop to hPrintLoop
+dCheck cpd #0 ; Compare D to 0
+ bne dDNotZero ; If D != 0, branch back to hDNotZero
+dPrintDone ldaa operator ; Load operator into A to see if negative
+ cmpa #'-' ; Compare A to '-'
+ bne dNotNeg ; If A != '-', jump to dNotNeg
+ staa 1,+y ; Save '-' into buffer
+dNotNeg ldx #buffer2 ; Load the address of buffer2 in X
+ jsr strrev ; Reverse string in Y in buffer in X
+ jsr WriteString ; Jump to write string to write the number
+ ldy lenBuf2 ; Load the length of buffer2 into Y
+ ldx #buffer2 ; Load the address of buffer2 into X
+ jsr Zeros ; Fill buffer2 with zeros
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+dIsZero ldaa #'0' ; Load '0' character into A
+ jsr putchar ; Print character to the screen
+ puly ; Restore Y from the stack
+ puld ; Restore D (A:B) from the stack
+ pulx ; Restore X from the stack
+ rts ; Return to caller
+dIsNegative psha ; Save A to the stack
+ ldaa #'-' ; Load '-' into A
+ staa operator ; Save '-' to operator buffer
+ pula ; Restore A from the stack
+ nega ; Two's complement of A
+ suba #1 ; Subtract 1 from A
+ negb ; Two'complement of B
+ subb #1 ; Subtract 1 from B
+ addd #1 ; Add 1 to D
+ bra dAfterNeg ; Jump back to dAfterNeg
+
+;*************************************************************************
+; Zeros subroutine
+;
+; This subroutine will write zeros to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y
+; Output: Zeros in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for 0
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+Zeros
+ psha ; Save A to the Stack
+ clra ; Clear A
+zerosLoop staa 1,x+ ; Load A into byte at X
+ dbne y,zerosLoop ; Decrement Y and loop if Y != 0
+ pula ; Restore A from the stack
+ rts ; Return to caller
+
+;*************************************************************************
+; memset subroutine
+;
+; This subroutine will write a given byte to every byte in a given array.
+;
+; Input: Address of an array in X and its length in Y, the byte in A
+; Output: The given byte in every byte of an array.
+; Registers in use: X for the address of the array, Y for the length, and A for the given byte
+; Memory locations in use: Memory Address of the array
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+memset
+ staa 1,x+ ; Load A into byte at X
+ dbne y,memset ; Decrement Y and loop if Y != 0
+ rts ; Return to caller
+
+;*************************************************************************
+; WriteString subroutine
+;
+; This subroutine will write a given null terminated string to the serial.
+;
+; Input: Address of null terminated string in X
+; Output: Null terminated string written to serial
+; Registers in use: X for the address of the string and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and putchar subroutine.
+;
+
+WriteString
+ psha ; Save A to the stack
+writeLoop ldaa 1,x+ ; Load the byte at addr in X, then add 1
+ beq doneWrite ; if A == 0, branch to doneWrite
+ jsr putchar ; Jump to putchar to write byte to serial
+ bra writeLoop ; branch always to writeLoop
+doneWrite pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; ReadString subroutine
+;
+; This subroutine will read a string from the serial line to a given address.
+;
+; Input: Address of an array in X
+; Output: Null terminated string in the given array
+; Registers in use: X for the address of the string Y for the length of the string,
+; and A for the current byte
+; Memory locations in use: Memory Address for serial line, address of the string
+;
+; Comments: This subroutine requires serial to be setup and getchar subroutine.
+;
+
+ReadString
+ psha ; Save accumulator A to the stack
+ pshy ; Save Y to the stack
+ pshx ; Save X to the stack
+readLoop jsr getchar ; Jump to putchar to write byte to serial
+ beq readLoop ; While A == 0, loop
+ cmpa #CR ; If A == CR, exit loop
+ beq doneRead ; Branch to doneRead if A == CR
+ staa 1,x+ ; Save the byte to the addr in X, then add 1
+ jsr putchar ; Write Character back to the terminal
+ dey ; Decrement Y by 1
+ beq doneRead ; If Y == 0, no more room, stop reading
+ bra readLoop ; branch always to readLoop
+doneRead ldaa #LF ; Load Line Feed into A
+ jsr putchar ; Write LF to terminal
+ pulx ; Restore X from the stack
+ pulY ; Restore Y from the stack
+ pula ; restore A from the stack
+ rts ; return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine writes a single byte to a serial line
+;
+; Input: A single ASCII byte in accumulator A
+; Output: Sends one character to SCI port
+; Registers in use: Accumulator A with input byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+putchar brclr SCISR1,#%10000000,putchar ; wait for transmit buffer empty
+ staa SCIDRL ; send a character
+ rts ; Return to caller
+
+;*************************************************************************
+; putchar subroutine
+;
+; This subroutine reads one byte from the SCI port
+;
+; Input: One byte from the SCI port
+; Output: One byte in accumulator A
+; Registers in use: Accumulator A for output byte
+; Memory locations in use: SCISR1 and SCIDRL status and data registers
+;
+
+getchar brclr SCISR1,#%00100000,getchar7 ; If no input on SCI port, return 0
+ ldaa SCIDRL ; Read one byte from SCI port into A
+ rts ; Return to caller
+getchar7 clra ; Set A to 0
+ rts ; Return to caller
+
+*
+**************************************************************************
+* Data Section 2: address used [ $3100 to $3FFF ] RAM Memory
+*
+
+invalidStr dc.b 'Invalid input format',CR,LF,NULL ; Invalid input error message
+
+prompt dc.b 'Ecalc> ',NULL ; Prompt string for calculator
+
+overflow dc.b 'Overflow Error',CR,LF,NULL ; Overflow error message
+
+; msg: this is the main option menu string
+msg dc.b '1) Input positive decimal integer numbers only',CR,LF
+ dc.b '2) Input and output maximum four digit numbers only',CR,LF
+ dc.b '3) Valid operators are: +, -, *, and /',CR,LF
+ dc.b '4) Input number with leading zero is OK',CR,LF
+ dc.b '5) Input only two numbers and one operator in between, no spaces',CR,LF
+ dc.b '6) Show Ecalc> prompt and echo print user keystrokes unltil Return key',CR,LF
+ dc.b '7) Repeat print user input and print answer after the = sign',CR,LF
+ dc.b '8) In case of an invalid input format, repeat print the user input until the error character',CR,LF
+ dc.b '9) In case of an invalid input format, print error message on the next line: Invalid input format',CR,LF
+ dc.b '10) Keep 16bit internal binary number format, detect and flag overflow error',CR,LF
+ dc.b '11) Use integer division and truncate any fraction',CR,LF,NULL
+
diff --git a/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Postload.cmd b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Postload.cmd
new file mode 100644
index 0000000..ac4d359
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Postload.cmd
@@ -0,0 +1 @@
+// After load the commands written below will be executed
diff --git a/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Preload.cmd b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Preload.cmd
new file mode 100644
index 0000000..0bed464
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Preload.cmd
@@ -0,0 +1 @@
+// Before load the commands written below will be executed
diff --git a/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Reset.cmd b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Reset.cmd
new file mode 100644
index 0000000..bf55944
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Reset.cmd
@@ -0,0 +1 @@
+// After reset the commands written below will be executed
diff --git a/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_SetCPU.cmd b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_SetCPU.cmd
new file mode 100644
index 0000000..6a1549a
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_SetCPU.cmd
@@ -0,0 +1 @@
+// At startup the commands written below will be executed
diff --git a/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Startup.cmd b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Startup.cmd
new file mode 100644
index 0000000..6a1549a
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmd/Full_Chip_Simulation_Startup.cmd
@@ -0,0 +1 @@
+// At startup the commands written below will be executed
diff --git a/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell.mcp b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell.mcp
new file mode 100644
index 0000000..1108ec8
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell.mcp
Binary files differ
diff --git a/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/CWSettingsWindows.stg b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/CWSettingsWindows.stg
new file mode 100644
index 0000000..d189836
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/CWSettingsWindows.stg
Binary files differ
diff --git a/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.o b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.o
new file mode 100644
index 0000000..6d2d9d3
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.o
Binary files differ
diff --git a/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.sx b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.sx
new file mode 100644
index 0000000..b3bde1e
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/ObjectCode/main.asm.sx
@@ -0,0 +1,47 @@
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diff --git a/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/TargetDataWindows.tdt b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/TargetDataWindows.tdt
new file mode 100644
index 0000000..395730a
--- /dev/null
+++ b/cmpen472hw7_McDonnell/cmpen472hw7_McDonnell_Data/Standard/TargetDataWindows.tdt
Binary files differ
diff --git a/cmpen472hw7_McDonnell/prm/burner.bbl b/cmpen472hw7_McDonnell/prm/burner.bbl
new file mode 100644
index 0000000..0c57619
--- /dev/null
+++ b/cmpen472hw7_McDonnell/prm/burner.bbl
@@ -0,0 +1,157 @@
+/* logical s-record file */
+OPENFILE "%ABS_FILE%.s19"
+format=motorola
+busWidth=1
+origin=0
+len=0x1000000
+destination=0
+SRECORD=Sx
+SENDBYTE 1 "%ABS_FILE%"
+CLOSE
+
+
+/* physical s-record file */
+OPENFILE "%ABS_FILE%.phy"
+format = motorola
+busWidth = 1
+len = 0x4000
+
+/* logical non banked flash at $4000 and $C000 to physical */
+origin = 0x004000
+destination = 0x0F8000
+SENDBYTE 1 "%ABS_FILE%"
+
+origin = 0x00C000
+destination = 0x0FC000
+SENDBYTE 1 "%ABS_FILE%"
+
+/* physical FTS512K flash window to physical
+origin = 0x008000
+destination = 0x080000
+SENDBYTE 1 "%ABS_FILE%"
+*/
+
+/* physical FTS256K parts flash window to physical
+origin = 0x008000
+destination = 0x0C0000
+SENDBYTE 1 "%ABS_FILE%"
+*/
+
+/* physical FTS128K parts flash window to physical
+origin = 0x008000
+destination = 0x0E0000
+SENDBYTE 1 "%ABS_FILE%"
+*/
+
+/* physical FTS64K parts flash window to physical
+origin = 0x008000
+destination = 0x0F0000
+SENDBYTE 1 "%ABS_FILE%"
+*/
+
+/* physical FTS32K parts flash window to physical
+origin = 0x008000
+destination = 0x0F8000
+SENDBYTE 1 "%ABS_FILE%"
+*/
+
+/* logical 512 kB banked flash to physical */
+origin = 0x208000
+destination = 0x080000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x218000
+destination = 0x084000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x228000
+destination = 0x088000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x238000
+destination = 0x08C000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x248000
+destination = 0x090000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x258000
+destination = 0x094000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x268000
+destination = 0x098000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x278000
+destination = 0x09C000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x288000
+destination = 0x0A0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x298000
+destination = 0x0A4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2A8000
+destination = 0x0A8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2B8000
+destination = 0x0AC000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2C8000
+destination = 0x0B0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2D8000
+destination = 0x0B4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2E8000
+destination = 0x0B8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x2F8000
+destination = 0x0BC000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x308000
+destination = 0x0C0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x318000
+destination = 0x0C4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x328000
+destination = 0x0C8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x338000
+destination = 0x0CC000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x348000
+destination = 0x0D0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x358000
+destination = 0x0D4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x368000
+destination = 0x0D8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x378000
+destination = 0x0DC000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x388000
+destination = 0x0E0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x398000
+destination = 0x0E4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3A8000
+destination = 0x0E8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3B8000
+destination = 0x0EC000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3C8000
+destination = 0x0F0000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3D8000
+destination = 0x0F4000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3E8000
+destination = 0x0F8000
+SENDBYTE 1 "%ABS_FILE%"
+origin = 0x3F8000
+destination = 0x0FC000
+SENDBYTE 1 "%ABS_FILE%"
+
+CLOSE
+